I had a favorite espresso cafe nearby my office, but I don't go to there lately since I bought my own espresso machine. I had a favorite espresso cafe near my office, but I don't go there lately since I bought my own espresso machine.

"near" is more natural than "nearby" here "go there" is more natural than "go to there"

I had/have a favorite espresso cafe nearby my office, but I don't go to there lately anymore since I bought my own espresso machine. I had/have a favorite espresso cafe near my office, but I don't go there lately anymore since I bought my own espresso machine.

I would actually have a preference for "I have" here, even if you stopped going, if this is still your favorite cafe. "Nearby" is used alone, whereas "near" needs the reference location. Extra info: "since" can be a synonym of "because," or it can denote a starting point in time. Either one would make sense here, of course

I had a favorite espresso cafe nearby my office, but {I don't go to there these days | I haven’t gone there lately} since I bought my own espresso machine. I had a favorite espresso cafe near my office, but {I don't go to there these days | I haven’t gone there lately} since I bought my own espresso machine.

I had a favorite espresso cafe nearby my office, but I don't go to that served espresso, but I haven't been going there lately, ever since I bought my own espresso machine. I had a favorite cafe near my office that served espresso, but I haven't been going there lately, ever since I bought my own espresso machine.

I'm thinking I wi'll buy another espresso machine named Superkop that can make a very high quality espresso. I'm thinking I'll buy another espresso machine named Superkop that can make very high quality espresso.

"I will" isn't wrong but, unless you want to be formal or express strong intent, "I'll" feels more natural Here "a" is unnatural so best to leave it out

I'm thinking I will buy another espresso machine namcalled "Superkop that," which can make a very high quality espresso. I'm thinking I will buy another espresso machine called "Superkop," which can make very high quality espresso.

I'm thinking I will buy another espresso machine named Superkop that can make a very high quality espresso. I'm thinking I will buy another espresso machine named Superkop that can make a very high quality espresso.

It’s fine with or without the “a” in “a very”.

I'm thinking I willof buying another espresso machine named Superkop that can make a very high quality espresso. I'm thinking of buying another espresso machine named Superkop that can make a very high quality espresso.

I'm thinking I will buy another espresso machine namcalled Superkop that can make a very high quality espresso. I'm thinking I will buy another espresso machine called Superkop that can make a very high quality espresso.

"called" is used more for the names of items and inanimate objects. "named" is more for people and animals.

On the other hands, I don't like a black coffee that much. On the other hand, I don't like black coffee that much.

"On the other hand" is a set phrase, no plural on "hand" "a" is also best left out here

On the other hands, I don't like a black coffee that much. On the other hand, I don't like black coffee that much.

Since you are using this expression (on the other hand), it's making a direct reference to the Superkop machine. This would imply that the machine is also very good at making black coffee, which you have no interest in. But if you just want to make the statement that you love espresso and are disinterested in black coffee, I would say "Although I love espresso, I don't really like black coffee."

On the other hands, I, don't like a black coffee that much. On the other hand, don't like black coffee that much.

On the other hands, I don't like a black coffee that much. On the other hand, I don't like black coffee that much.

On the other hands, I don't like a black coffee that much. On the other hand, I don't like black coffee that much.

take out "a". Talking about black coffee in general, but using "a" implies a singular coffee.